server/AyaNova/Controllers/DataListController.cs

@@ -70,6 +70,11 @@ namespace AyaNova.Api.Controllers
             {
                 return StatusCode(403, new ApiNotAuthorizedResponse());
             }
+            catch (System.ArgumentOutOfRangeException e)
+            {
+                return BadRequest(new ApiErrorResponse(ApiErrorCode.NOT_FOUND, "DataListKey", e.Message));
+
+            }
         }